Punching machine



Aug 14, 3323.

C. W. WENTHEF? PUNCHING MACHINE Filed April 4. 122

INVENTOR f? 4 CHmsrmlv w. M/INTHER Patented Aug. 14, 123..

cements" err-tees,

or Fireside, onrrronuid.

' ruricnriwe enemas.

Application fileen rn To dZZ whom-it witty concern: 1.

Be itknownthat 1, CHRISTIAN WIN-w a citizen'of the UnitedStates,= and aof holes desired, and" a revolving die plate various diameters of thepunches.

Another object is to provide in a device of the above'ch-aracter meansfor quickly and easily interchanging the punches."

Other objects and advantages will appear hereinafter and, whiletl 'havedescribe'd and: shown the preterre'd form ofniy invention,- it wi'll be"understood that I do not limit myself tosuch preferred form, butth-at'va rious changes and adaptations' maygbemade. thereinwit'houteparting from. the spirit having: holes therein corresponding to the ofmy invention. I p

In the drawings accompanying and forming apart hereof:

Fig. 1 is a side elevation of my machine in its operative position withparts broken away. 7

Fig. 2 is a top plan of Fig. 1.

Fig. 3 is a right hand elevation of Fig. 1.

Fig. 4 is a vertical central section of Fig. 1 with parts in elevation.

Fig. 5 is a detail of the punch operating means.

Fig. 6 is a detail view of a portion of In device.

' eferring to the drawings, my device comprises a frame 8., providedwith outwardly extending ears 9 and 10 by means of which the device maybe permanently secured to a bench or table by bolts or otherwise. At thelower forward termination of frame 8 is provided a bearing 11 upon theupper :t'ace' of which is adjustably mounted a die plate 12, by means ofa stud 13, a nut 14: on the lower end of said stud providing means forlocking said die plate against rotation. Die plate 12 is provided with aplurality of holes or apertures of varying sizes to suit the punches 1t1s 1922. Serial no. 5493110.

intended to it understood;

holes 15 are all the same. distance. radially from; the center ofdiepl-atel=12.-;..Ei;tending from frame 8, at a distance from die p'late"12, is averticallyeXtendingb aring 16 in which .is. provided' a.verticalv opening 17,; inwhiclropen ing ar'euslidably mounted thepunches 18. It willbe noted that thehod y of punches .1 8 are all of thesame[diameter til) to fit hole. 1'7,'.=and the lowernendse weer:

P a diameter. suitable to produce the sizeo'f hole required. Theupperendofdmmegd terminatesv in abearing19 at right angles} to. hearing 16,iii-which is revolubly mounted the punch operating handle 20, by meai'iso't pintle 21: integral" therewith.v As best shownv in Fig 1 5, theinnerface of;punclr .operatingihandle 20 is provided with -an eccntricxrim22,which rim is adapted tof fit within slits 23 on the upper en'd ofpunches. l8, so that as handle 20 is rotated on its pivot, punches 18will be moved 1115- wardlyor downwardly according to-the d'i rectionthe; handle is rotated.- As shown in. the drawings, a right handrotation of the handlewill depress-the punch, --and an opposite rotationwiilelevate the same: tending outwardly from' ne side of frame8; isabea-ring24 on which is pivotally-mountj'j ed one end of astripper25, theuse or" which will be obvious Mounted upon the rear end of frame 8 is asubstantially rectangular box 26 adapted to receive therein the extrapunches 18. The rear end of pintle 21 projects through bearing 19 ashort distance and is provided with an annular recess 27, the inner edgeof which lies in the same plane as the rear edge of bearing 19, andpivotally mounted at one end at one side of bearing 19 is a bifurcatedlocking member 28, the turcations of which are adapted to be mountedwithin recess 27 to prevent the withdrawal of pintle 21.

In the operation of my device the locking member 28 will be swung on itspivot to release pintle 21, when handle 20 may be removed and thedesired punch positioned in bearing 16. Handle 20 will then be replacedwith the rim 22 engaging the recess 23 in punch 18. Nut 14: will then beloosened and die plate 12 rotated to bring the hole therein, whichcorresponds to the diameter of the punch, into alignment with the punch.tated to move the punch downwardly into engagement with its respectiveopening.

The handle 20 will then be 130-.

:claim is; r i

1. punching machine comprising a frame adapted to be mounted upon astationary structure; a horizontally extending,

revoluble, die plate mounted in said frame and being provided with aplurality. of apertures therein; a vertically extending punchvmounted insaid frame adapted for engagement with any one of said die plateapertures; a recess in the upper end of said punch; a horizontallydisposed operating member mounted in said frame above said punch andbeing provided with an eccentric rim adapted for engagement with therecess in said punch; a handle for rotating said operating member; astripper pivotally mounted at one end on said frame and being adapted tobe brought into engagement 7 with the lower end of said the same. 1 r.2. A punching machine comprising a frame; a horizontally extending dieplate revolubly mounted in said frame and being provided with aplurality of different sized openings therein; means to lock said plateagainst rotation; a plurality of punches having the cutting ends thereofof a size to fit the openings in said plate, there being one punch tostrip Stripper 25 will then punch for each of said openings, each ofsaid punches having a recessin the upper end thereof; a horizontallydisposed operat ing member detachably mounted in the upper end of saidframe and being provided with an eccentric rim adapted to engage therecess in said punches; a stripper pivotally Vmounted at one end on saidframe and being adapted to have its free end brought into contact withthe cutting end of said punches to strip the same; locking means forsaid operating member to lock the samein 1ts position for use; and a boxextending rearwardly from said frame adapted to have V mounted thereinthe punches not being used. o

3. A punching machine comprising a frame; a die plate revolublymountedin said frame and being provided with a plurality of spaced openingstherethrough; means to lock said plateagainst rotation; a

punch slidably mounted in said frame at right angles to said die plateadapted for engagement with any of said die plate apertures; a recess inthe side of said punch; an operating member mounted in said frame at theend of said punch opposite the die plate having an eccentric rim adaptedfor engagement with the recess in said punch, whereby the rotationthereof will cause said punch to move towards or away fromsaid .dieplate;

means to rotate said operating member; a stripper .plvotally mounted atone end on said frame and being adapted .to be brought intoengagementwiththe lower end of said punch to strip the same.

In witness that I claim theforegoing I have hereunto set my hand this22ndiday of March, 1922. V V

CHRISTIAN W. VVINTHER.

